procurement of steel door, window, grill, shutter, collapsible gate, fabrication of any truss etc at various worksites under amarpur / ompi / karbook / silachari r d block under gomati district, tripura , manufacturing & supplying of complete plain grill with 19 mm x 4mm square bar higher specification as per required design. , manufacturing & supplying of complete m.s. ornamental grill with square bar of size 4 / 8 / 12mm & higher specification as per required design. , manufacturing & supplying of complete m.s. grill gate with 19 mm x 4mm / 20 mm x 6 mm / 25 mm x 6 mm ms flat & ms angle of 35 mm x 35 mm x 5mm incl. ms sheet ( 3mm thick ) and other related accessories for complete item / higher specification as per required design. , manufacturing & supplying of complete m.s.grill gate with 40 / 32 / 25 mm black iron pipe, ms flat & 3 mm ms sheet and other related accessories for complete item / higher specification as per required design. , manufacturing, supplying & fitting fixing of complete ms collapsible steel gate with vertical channels 20 mm x 10 mm x 2mm braced with flat iron diagonals, 20mm x 5mm size top & bottom rails of iron 40 x 40 x 6mm with 38 mm dia steel pulleys complete with bolt, nut, locking arrangement, stoppers, handles etc incl. applying a priming coat of red lead paint. , manufacturing & supplying of complete steel door ( obb / awc pattern ) inc. steel shutter. , manufacturing & supplying of complete steel window ( obb / awc ) pattern including steel shutter. , fabrication & fitting fixing charge of steel tubular truss incl. cost of all required accesories ( except bip ) - ( bip will be issued from department ) , fabrication charge incl.fitting fixing charge of any old structure with required accessories. ( pipe / angle / holding down bolt will be issued from department ) . , manufacturing, supplying & fitting fixing of complete m.s. rolling shutter made of 80 x 1.35 mm ms laths interlocked together through their entire length & joined together at the end by end locks mounted on specially designed pipe shaft with brackets side guides & arrangement for inside & outside locking push & pull operation complete but incl. fixing of the top cover, ball bearing & spring etc. , manufacturing & supplying of complete steel door as per jail specification. , manufacturing & supplying of complete steel window as per jail specification , manufacturing & supplying of ms grill incl. arrow for boundary wall as per required design & specification. , fabrication & fitting fixing of steel foot suspension bridge. ( materials will be provided from department ) , fabrication & fitting fixing charge of chequered sheet having thickness not less than 5 mm in various sizes as directed by the engineer in charge and having weight not less than 40.03 kg per sqmtr and of is specification incl. cost of all required accessories upto worksite.